Abstract: An LED lighting element for use in a fluorescent lighting fixture includes first and second end caps formed as printed circuit boards for connecting with and obtaining physical support from respective first and second sockets of the fluorescent lighting fixture, and a blade supporting one or more LEDs between the first and second end caps. The blade includes a first compartment that contains high voltage circuitry, a second compartment, separated from the first compartment, that contains a low voltage assembly including the one or more LEDs, and a third compartment forming an optical cavity. The element also includes a power converter, located in one or both of the first and second end caps, that converts power from the fluorescent light socket into power for operating the LEDs.

Abstract: An LED-based lighting system includes a housing forming one or more apertures, a PCB having conductors on its front-side, and one or more LEDs mounted with the conductors. The PCB mounts with the conductors proximate to a top surface of the housing such that the LEDs emit light through the apertures, and heat generated by the one or more LEDs primarily dissipates through the conductors to the housing. A retrofit apparatus for a light fixture includes a PCB having conductors on its front-side thereof, and one or more LEDs mounted with the conductors. The PCB mounts with the conductors proximate to a surface of a mounting bracket that is configured for mounting to the light fixture, such that when the bracket mounts to the light fixture, heat generated by the one or more LEDs primarily dissipates through the conductors and the structural element to the light fixture.

Abstract: An LED-based lighting system includes a housing forming one or more apertures, a PCB having conductors on its front-side, and one or more LEDs mounted with the conductors. The PCB mounts with the conductors proximate to a top surface of the housing such that the LEDs emit light through the apertures, and heat generated by the one or more LEDs primarily dissipates through the conductors to the housing. A retrofit apparatus for a light fixture includes a PCB having conductors on its front-side thereof, and one or more LEDs mounted with the conductors. The PCB mounts with the conductors proximate to a surface of a mounting bracket that is configured for mounting to the light fixture, such that when the bracket mounts to the light fixture, heat generated by the one or more LEDs primarily dissipates through the conductors and the structural element to the light fixture.